19939792 has 20 divisors (see below), whose sum is σ = 38702880. Its totient is φ = 9951968.

The previous prime is 19939783. The next prime is 19939811. The reversal of 19939792 is 29793991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15693 + ... + 16915.

It is an arithmetic number, because the mean of its divisors is an integer number (1935144).

Almost surely, 2^19939792 is an apocalyptic number.

It is an amenable number.

19939792 is a deficient number, since it is larger than the sum of its proper divisors (18763088).

19939792 is a wasteful number, since it uses less digits than its factorization.

19939792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250 (or 2244 counting only the distinct ones).

The product of its digits is 275562, while the sum is 49.

The square root of 19939792 is about 4465.3994222242. The cubic root of 19939792 is about 271.1691051147.

The spelling of 19939792 in words is "nineteen million, nine hundred thirty-nine thousand, seven hundred ninety-two".